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Chapter Analysis
Beginner14 pages • EnglishQuick Summary
Chapter 7 on Temperature and its Measurement introduces the concept of temperature as a basic measure of hotness or coldness of an object. It explains various scales of measurement including Celsius, Fahrenheit, and Kelvin, and discusses the use of clinical and laboratory thermometers. The chapter includes activities to explore how temperature is measured and emphasizes the importance of accuracy in readings【4:1†class-6-science-chapter-7.pdf】.
Key Topics
- •Temperature scales: Celsius, Fahrenheit, Kelvin
- •Measuring temperature with thermometers
- •Clinical and laboratory thermometers
- •Converting between temperature scales
- •SI units and their importance in measurement
Learning Objectives
- ✓Understand different temperature scales and their uses
- ✓Learn how to use a clinical thermometer accurately
- ✓Distinguish between different types of thermometers
- ✓Explore the importance of SI units in measurements
- ✓Perform experiments to measure temperature accurately
Questions in Chapter
The normal temperature of a healthy human being is close to?
Answer: 37.0 °C【4:16†class-6-science-chapter-7.pdf】
Page 137
37 °C is the same temperature as?
Answer: 98.6 °F【4:16†class-6-science-chapter-7.pdf】
Page 138
A laboratory thermometer is not used to measure our body temperature. Give a reason.
Page 138
If you have to measure the temperature 22.5 °C, which of the following three thermometers will you use? Explain.
Page 139
Additional Practice Questions
Explain why it is important to not rely on the sense of touch alone to measure temperature.
mediumAnswer: The sense of touch is subjective and not reliable for accurately assessing temperature, as demonstrated by activities where simultaneous exposure to different temperatures led to conflicting sensations. Scientific measurement with thermometers provides objective and quantitative data.
How can the Fahrenheit scale be converted to the Celsius scale?
mediumAnswer: To convert Fahrenheit to Celsius, subtract 32 from the Fahrenheit value and multiply by 5/9.
List the steps involved in using a laboratory thermometer to measure the temperature of a liquid.
easyAnswer: Immerse the bulb of the thermometer in the liquid without touching the container sides, wait for the liquid column to stop rising, and read the temperature at eye level while it is still in the liquid.
What precautionary measures should be taken when using a laboratory thermometer?
easyAnswer: Handle with care to avoid breakage, do not hold by the bulb, and ensure to take readings at eye level with the thermometer still immersed in the liquid.
Why is it important for the SI unit of temperature to be kelvin?
hardAnswer: The kelvin is designed to be the SI unit to ensure uniformity and coherence in scientific communication worldwide, and it directly relates to fundamental physical processes at absolute zero.